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Jersey, have invented certain Improvements in Friction-Clutch Pulleys; :ind I do hereb GHVARLES WRIGHT, OF NEWARK, NEW 'JERSEY LettersPatent No. 80,045, dated July 14, 1868; ancclatcd July 10, 1868.

IMPROVEMENT IN IRIGTION-GLUTGH PULLEY.

@tige Scintille hierrr-h tu in tlgrse tttcrs 'utent fmt mating part nt the sante,

TO ALL WHOMT MAY CONCERN:

Be it known that I, CII-ARLES WRIGHT, of the city of Newark, in the county of Essex, and Stute of New y declare the following to be a. full and exact description of the same, reference beingr herein hurl to the drawings that accompany this specification, making pnrt ofthe same.

The nature of my improvement consists in the peculiar construction of' the levernttuchments, and in the provision for adjustment to insure tightness. i

In the drnwings- Figurel is e. perspective view of the clutch und thepulley.

Figure 2 is a sitle view of the eccentric, eccentric-block, and screw.

Figure 3,'n back view of the eccentric, eccentric-block, `setscre\v,a.nd friction-piece in position in the interior of zt-pulley.4 i

A is the shaft, Vthztt is in two lengths, their ends meeting in the middle of the hubof the pulley/.13, torone of'y which ends the pulley is fast. rihe driver een be on either piece.

C is a friction-piece or block. I

D is nn eccentric that turns on the pin z. Upon the eccentric is :t block, y, shnped-to'rlssist the curve of the eccentric on one side; the other side flut.

X is :t set-screw, whose nut is in the stem of the friction-block C.

E is n sliding arm that moves freely on thc main shaft A, in the prolonged hub ofiwhich is n groove to receive the .crotch-end of the lengar lever F, und W is the connecting-link between the sliding arm E und the lever-end of the eccentric, D.

As in such clutches thevf'riction of' necessity wears nwny both the inner rim of the pulley und` the outer surface of the block C, slight adjustment of distnnceby the set-screw X will nt` nny time, insure the turn of the eccentric to bring theline ot' pressure between thepin und the screw X tojust thfttlpoint, to and from which it is thc most chsily removable by the operntion of the combined leverage of F, E, w, :ind D, and thus the starting nml stopping of large pulleys with wille belts cnn be effected with more fncility by less power than con be tlonc"wherc there is no provision for :t maintenance of the enact distance that is constantly vnrying from weer and teur of the parts, which in this class of clutches is very great.

By thus preserving the line of pressure, it cnn stanti at nn easily removable point without that continually jarring loose so annoying to the workmen, to which other clutches ure linble from wenr. What I claim :1s m im rovement and desire to secure bv Letters Potent is- P t Y a y The-setscrew X, when employed in n. friction-clutch, substantially in the manner and for thev purposes spcciictl, the nut hein,r in the stem of the block C.

Th sliding `arm E, link w, and eccentric, D, in combination with the :tcljustable blocleC, when constructed, combined, nml arranged in thc manner und for the purpose hereinabove Set forth.

CHARLES WRIGHT.

Witnesses:

W. M. Goenruo, SIDNEY U. EDWARDS. 

